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You won't tell, will you?) One of many bad physics jokes/puns I recall from my undergraduate years came up in a quantum mechanics lecture. (By the way, I saw somewhere on the web that my ipod Planck joke, an excellent opportunity to explain a bit about the physics of the holographic principle, was called the "nerdiest joke ever".I'm actually secretly very pleased about that. Sorry about that joke (I won't explain it.you had to be there and it is sort of an in-joke). That reaction just makes me laugh even more, and it feeds on itself. There's a lot of pleasure to be had in gagging with laughter while twelve young faces sit there stonily looking at you as though you're nuts. I was in the middle of saying that Maxwell's equations are coupled differential equations, but that we can decouple them and see something interesting (what will turn out to be the wave equation) by simply curling, a practice which still survives to this day as an Olympic sport.
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So what was the bad physics joke? Oh, well, it really is bad. bad physics jokes! Today I was demonstrating in my physics 408b class -Electromagnetism- what I consider to be one of the greatest (and most accessible) triumphs of theoretical and experimental physics working together: The fact that you can take Maxwell's equations and show that they predict a wave-like phenomenon - which would have been interesting enough - but the prediction includes a specific value for the speed of propagation of of that wave, deriving it out of already known constants whose values were known from laboratory experiments in electromagnetism - and that speed is the speed of light! I still think that this is just one of the coolest things you ever see as an undergraduate in physics, and it still blows my skirt up even now. they get created afresh by your mood, your state of health, mind, body, the questions that get asked, and. No two lectures on the same material are ever alike. One of the reasons I love teaching is because there are times when you'll never know what will occur to you mid-sentence, and then get incorporated into the lecture.